Duct-Deployable Multi-Fiber Ferrule for Sealed Fiber Routing
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Solution Overview
Problem
Existing fiber optic connection systems, particularly hardened ones, are bulky and require complex installation processes, making it difficult to efficiently route fiber optic cables through conduits while maintaining a secure and sealed connection.
Innovation Solution
A duct-deployable multi-fiber ferrule assembly that allows for factory-terminated optical fibers to be easily routed through tubes, with a connector assembly that can be assembled post-deployment, featuring a spring-loaded mechanism for securing the fibers and a sealed connector body for environmental protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardened fiber optic connectors are used for environmental sealing and robust connections, then connection reliability and environmental protection are improved, but the device size and installation complexity increase
Solution Approach 1:
The connector system is divided into separate components: a ferrule assembly with pre-terminated fibers that can be deployed through the conduit, and a connector body that remains at the termination point. This segmentation allows the ferrule to be installed through the conduit wall without requiring complex field termination equipment, while the connector body provides the environmental sealing and robust connection interface.
Solution Approach 2:
The ferrule is pre-terminated with optical fibers at the factory before deployment. This preliminary action ensures precise fiber alignment and termination quality is achieved in the controlled factory environment rather than in the field, eliminating the need for complex field termination equipment and procedures while maintaining high connection reliability.
2Manufacturing precision
If pre-terminated ferrules are used for factory termination, then termination precision and efficiency are improved, but the ability to route fibers through conduits is limited
Solution Approach 1:
The system separates the pre-terminated ferrule assembly from the connector body, allowing the ferrule with attached fibers to be deployed through the conduit wall as a flexible assembly. This segmentation enables the ferrule to navigate the conduit routing requirements while maintaining the factory-terminated precision of the fiber connections.
Solution Approach 2:
The ferrule assembly is designed with flexible parameters including adjustable fiber lengths and configurable ferrule orientations that can accommodate different conduit routing scenarios. The spring-loaded deployment mechanism allows the ferrule to be inserted through the conduit wall at various angles and positions, adapting to the specific installation geometry while preserving the pre-terminated fiber precision.
3Reliability
If complex field termination procedures are used, then secure connections are achieved, but installation time and complexity increase
Solution Approach 1:
All complex termination procedures including fiber stripping, cleaving, coating removal, and precision alignment are performed at the factory before the ferrule is deployed to the field. The ferrule arrives pre-terminated with high-quality secure connections already established, eliminating time-consuming field termination procedures while maintaining connection security through the use of robust mechanical and optical coupling mechanisms.
Solution Approach 2:
The spring-loaded deployment mechanism automatically secures the ferrule in its final position within the connector body upon insertion through the conduit wall. The mechanical fastening arrangement self-activates during the deployment process, providing secure mechanical retention without requiring additional field termination steps or specialized installation equipment.
Data Source
AI summary
The present disclosure relates to a fiber deployment system for use with field installed fiber tubes such as blown fiber tubes. The fiber deployment system includes a fiber optic connector including a housing assembly having a connector body and a fiber tube attached at a rear end of the connector body. A multi-fiber ferrule assembly mounted on a deployable fiber can be loaded into the connector body through the fiber tube. The fiber tube can be coupled a field installed fiber tube by a tube coupler.